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| Organisms that can use energy from the sun or energy stored in chemical compounds to produce their own nutrients; organisms that can use the sun to make their own food. |
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| Organisms that cannot make their own food and must feed on other organisms. |
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| organisms that do not kill for food, but rather eat animals that have already died. |
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| organisms, such as fungi, that break down and absorb nutrients from dead organisms. |
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Definition
| a simple model that scientists use to show how matter and energy move through an ecosystem. |
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Definition
| organism in a food chain that represents a feeding step in the passsage of energy and materials. |
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Definition
| a more realistic and complex model that expresses all the possible feeding relationships at each trophic level in a community. |
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Definition
| these organisms only eat grass or other plant life |
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Definition
| these organisms only kill and eat meat and other animals |
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Definition
| these organisms will eat both plants and animals |
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Definition
| precipitation, condensation, transpiration, evaporation |
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